Zen Stable Release New Features Updated Firefox to 153.0.1 Fixes Various performance fixes, RTX Super Resolution not working, and HDR video playback not working on Windows (#14292) Fixed extra divider when urlbar has no results (#14717) Fix boost applying wrong size override (#14461) Fixed crashes/hangs when creating new spaces (#14713) Fixed non-tab drags allowing to switch Spaces (#14724) Fixed…
Zen Stable Release Security https://www.mozilla.org/en-US/security/advisories/mfsa2026-68/ New Features Updated Firefox to 153.0 High Dynamic Range (HDR) video playback is now available on Windows - this feature needs HDR mode enabled for the display in Windows Settings - Display. Improved UI for container selection and management It is now possible to merge multiple PDFs by dragging a PDF into th…
Zen Stable Release Fixes Fixed essentials promo UI leaving gap on pressing Esc (#14544) Fixed localization strings not being translated in some places (#14605) Fixed new Spaces not being able to be removed (#14618) Fixed split view drag and drop ending up opening new windows (#14619) Other bug fixes and improvements.
Zen Stable Release Security https://www.mozilla.org/en-US/security/advisories/mfsa2026-67/ New Features Updated to Firefox 152.0.6 Fixes Fixed essentials promo UI leaving gap on pressing Esc (#14544) Fixed misaligned symbolic space icons in Space options menu on Linux (#14495) Fixed Spaces switching when dragging tab to another monitor (#14511) Fixed tab order flipping when moving tabs between wor…
Zen Stable Release New Features Updated to Firefox 152.0.5 Fixes Fixed some localization strings not being translated in some places (#10749) Fixed glance being able to be open a second time when it was already open (#14460) Other bug fixes and improvements.
Zen Stable Release Security https://www.mozilla.org/en-US/security/advisories/mfsa2026-62/ New Features Updated to Firefox 152.0.4 Fixes Fixed overflowing addons not having context menus (#14382) Fixed copy, paste, undo, redo, and similar keyboard shortcuts not working inside macOS system dialogs such as the Save and Open panels. Other bug fixes and improvements.
Zen Stable Release New Features Updated to Firefox 152.0.2 and 152.0.3 Added 'Edit pinned tab' context menu item to manually set a pinned tab's URL Added 'Add Route for Domain' context menu item to quickly add a tab's domain to the Space Routing settings Fixes Prevent sidebar from flickering when moving a tab (#14131) Full-screening while on a glance tab will now expand the glance tab to a normal…
Zen Stable Release New Features Updated to Firefox 152.0.1 Fixes Fixed transparency not working after updating to 1.21.2b (#14259) Fixed frequent crashes affecting users with Intel Raptor Lake processors Fixed an issue on macOS where choosing a PDF option, such as "Save as PDF", from the system print dialog would send the job to your printer instead of saving a file. Other minor bug fixes and impr…
Zen Stable Release Security https://www.mozilla.org/en-US/security/advisories/mfsa2026-57/ New Features Updated to Firefox 152.0 Improved support for more advanced cursor movement commands, including those relating to paragraph boundaries, on macOS. On Windows and Linux, you can now copy links via the tab context menu by right-clicking a tab and selecting Share > Copy Link, making it easy to copy…
Zen Stable Release Fixes Fixed duplicate bookmarks appearing when re-opening a window in MacOS (#9540) Fixed freezes when switching spaces on certain occasions (#14110) Improved performance for switching between tabs Other minor bug fixes and improvements
Zen Stable Release New Features Updated to Firefox 151.0.4 Added 'Space Routing', a new feature that allows you to route links to a specific Space. To get started, click on the three dots in your Space name and click on 'Space Routing Settings'. Fixes Fixed extension-opened tabs not being created with the correct container (#14100) Fixed a bug with the Boosts editor having the wrong theme colors (…
Zen Stable Release Security https://www.mozilla.org/en-US/security/advisories/mfsa2026-54/ New Features Updated to Firefox 151.0.3 Boosts now support a dark mode UI based on your system dark mode setting. Fixes Fixed auto focus for new windows not working. (#12112) Fixed desktop shortcuts showing zen as 'Nightly'. (#13745) Other minor bug fixes and performance improvements.
Zen Stable Release New Features Updated to Firefox 151.0.2 You can now type New Boost in the urlbar to quickly create a new boost for the current site! Fixes Fixed pressing u duplicating tabs. (#13851) Fixed video controls going under the screen when in fullscreen mode. (#10594) Fixed boosts not working for certain websites. (#13844) Fixed an issue on macOS where smart cards and security keys coul…
Zen Stable Release This release includes a major new feature called Boosts! Boosts allow you to customize the look and feel of any website to your liking. To start boosting, click the site's control icon in the urlbar and click the new 'Boost' button. Security https://www.mozilla.org/en-US/security/advisories/mfsa2026-46/ New Features Updated to Firefox 151.0 and 151.0.1 Boosts are now in Zen! Thi…
Zen Stable Release Security https://www.mozilla.org/en-US/security/advisories/mfsa2026-45/ New Features Updated to Firefox 150.0.3 Fixes Fixed native popovers not working after using dropdowns (#13623) Fixed unresponsive tabs when opening external links (#13620) Fixed tab renaming input fields being too narrow (#13629) Other minor bug fixes and performance improvements.
Zen Stable Release Security https://www.mozilla.org/en-US/security/advisories/mfsa2026-40/ GHSA-cc9c-mmmf-c5j6 GHSA-7p2r-fp29-9w69 New Features Updated to Firefox 150.0.2 Improved space swiping feel and performance The option for 'Create new space' keyboard shortcut has been added to the keyboard shortcuts settings. Desktop files on linux should now ship with translations for desktop entries. Fixe…